Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationUS4857046 A
Type de publicationOctroi
Numéro de demandeUS 07/111,036
Date de publication15 août 1989
Date de dépôt21 oct. 1987
Date de priorité21 oct. 1987
État de paiement des fraisCaduc
Numéro de publication07111036, 111036, US 4857046 A, US 4857046A, US-A-4857046, US4857046 A, US4857046A
InventeursRobert C. Stevens, Robert R. Braun
Cessionnaire d'origineCordis Corporation
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Drive catheter having helical pump drive shaft
US 4857046 A
Résumé
A flexible drive catheter for removing deposits from the inner walls of a blood vessel to increase blood flow through the vessel. The catheter includes an outer sheath and a rotatable core coupled to a distal tip which directly contacts the deposits. An outer surface of the rotatable core defines a screw pump for moving dislodged deposits away from the blood vessel through the catheter sheath to a bifurcating adapter located outside the patient. One opening in the adapter accommodates the rotatable core and a second opening provides a method of monitoring blood pressure in the blood vessel, removing dislodged deposits from the catheter and injecting flushing liquids or clotting control agents into the blood vessel.
Images(3)
Previous page
Next page
Revendications(8)
We claim:
1. A catheter for removing deposits from the inner walls of an obstructed region of a blood vessel comprising an elongated flexible catheter core of a sufficient length and flexibility to extend from outside a subject through a subject's cardiovascular system to the obstructed region within the blood vessel, said catheter core comprising a center portion having a helical pumping surface that spirals around the center portion along a substantial length of said catheter core for moving deposits separated from the blood vessel inner wall from a distal to a proximal end of said core; said core having an enlarged distal tip for abrading deposits from an inner wall of the blood vessel; an elongated catheter sheath for covering the helical pumping surface of said core; and proximal drive means coupled to the catheter core for rotating the core within the sheath to move deposits removed from the vessel wall out of said blood vessel through a region between said pumping surface of said core and an inner wall of the sheath.
2. The catheter of claim 1 further comprising a proximally located bifurcating adapter coupled to the sheath having first and second openings wherein a first opening communicates with a region beneath the sheath outside the catheter core to receive plaque withdrawn from the vessel and the second opening provides a passageway for routing the core outside the sheath to the drive means.
3. The catheter of claim 2 additionally comprising a seal to inhibit deposits from passing through the second opening along an outer surface of said core and act as a bearing for high speed rotation of said core within the sheath.
4. The catheter of claim 1 wherein the elongated catheter core and proximal drive means define a center passageway through said catheter.
5. The catheter of claim 1 wherein the enlarged a distal tip has flutes that spiral along an outside surface of said tip in the same sense as the spiralling outer pumping surface of the core.
6. The catheter of claim 4 wherein the core comprises an inner wire and outer wire wound around a concentric axis, said inner wire being wound with a relatively tight pitch and the outer wire being wound around the inner wire with a relatively wide pitch.
7. The catheter of claim 6 wherein adjacent coils of the inner wire touch to form a coiled wire cylinder defining at least a portion of said center passageway.
8. The catheter of claim 1 wherein the catheter core comprises a first center wire having a second wire helically wrapped around the center wire.
Description
TECHNICAL FIELD

The present invention relates to a catheter system for opening a totally or partially occluded blood vessel.

BACKGROUND ART

Arteriosclerosis is a condition where deposits build up along an inner surface of a blood vessel and cause a partial or, in extreme cases, a total blockage of the blood vessel. The increase in the number of coronary by-pass operations is some indication of the incidence with which the problem is encountered in older patients.

Prior art proposals recognize that one alternative to bypass-ing a partially or totally blocked region in a blood vessel is to open or widen the blocked blood vessel. One prior art technique for reopening a blocked blood vessel is to insert a balloon catheter inside the vessel to expand the vessel and either break loose deposits within the vessel or alternatively, increase the size of the lumen passing through those deposits.

An alternate proposal for opening a blocked blood vessel is to bring a high-speed rotating device into contact with occluded portions of the blood vessel. The rotating device produces cutting, abrading, or fluid turbulence to open the vessel and increase blood flow. One device intended for physically opening the blood vessel in this manner is disclosed in U.S. Pat. No. 3,614,953 to Moss entitled "Improvements In or Relating To Drills for Clearing Obstructions". In this patent, a high-speed motor rotates a flexible drive shaft connected to a cutting bit. The bit and flexible drive shaft are inserted into an occluded blood vessel so that when the bit is rotated at high speed and moved into contact with occluded regions it breaks loose deposits within the blood vessel.

A more recent prior art patent disclosing a similar system for opening a blocked blood vessel is disclosed in U.S. Pat. No. 4,445,509 to Auth entitled "Method and Apparatus for Removal of Enclosed Abnormal Deposits". This patent describes a differential cutting tool mounted at a distal end of a flexible shaft which can be inserted into an occluded blood vessel. Again, high speed rotation of the cutting tool causes the tool to remove abnormal deposits from inside the blood vessel.

U.S. Pat. No. 4,589,412 to Kensey entitled "Method and Apparatus for Surgically Removing Remote Deposits" discloses a procedure for removing atherosclerotic plaque. A cutting tip is rotated by the application of fluid pressure through a multi-lumen catheter.

U.S. Pat. No. 4,679,557 to Opie et al. entitled "Electrodynamic Transluminal Angioplasty System" discloses an advancer assembly that includes an off-axis drive that rotates a cutting tool such as that disclosed in the '509 patent to Auth.

The '509 patent to Auth stresses the importance in removing particles separated from an inner wall of the blood vessel. A hollow drive shaft is proposed by Auth to allow suction to be applied to a distal tip of the differential cutting tool disclosed in the '509 patent. It is suggested that particle-entrained blood will flow through the cutting tool to the hollow drive shaft when suction is applied.

USSR Pat. No. 778,067 to Yukhin discloses a helical cutter driven by a flexible shaft for separating blood clots from an internal blood vessel wall. A sheath surrounds the flexible shaft and is connected at a proximal location to a vacuum system for withdrawing separated clot particles from the blood vessel.

U.S. Pat. No. 3,732,858 to Banko discloses a system for removing blood clots, cataracts, and other objects from the eye. At FIG. 12 of this patent a cutting tip is driven by a solid, inflexible shaft having a "helical defining groove . . . such that it acts as a pumping means for removal of the material" (col. 15, lines 44-45) The use of an inflexible shaft makes the Banko system unsuitable for insertion into and passage through a patient's cardiovascular system.

DISCLOSURE OF THE INVENTION

One object of the present invention is a drive catheter having a mechanism for withdrawing dislodged particles and material from an interior region of a blood vessel. A drive catheter constructed in accordance with the invention includes a flexible center drive shaft or core having a length sufficient to extend from outside a subject through the patient's cardiovascular system to an obstructed region within a clogged blood vessel. The flexible core defines a spiraling or helical outer pumping surface to move deposits, plaque and the like separated from the blood vessel inner wall. The core or drive shaft is positioned within a flexible catheter like sheath covering the outer pumping surface of the core.

In one embodiment of the invention the core includes a distal tip portion that is brought into direct contact with the plaque within the blood vessel and which is rotated at high speed by a motor coupled to the core outside the patient. As the catheter core rotates the pumping surface attracts dislodged particles and draw those particles into a region between the catheter sheath and the rotating catheter core. At a proximal end of the catheter, a bifurcating adaptor is connected to the sheath and defines two openings in communication with the interior of the sheath. One adapter opening allows plaque and other deposits to be pumped away from the region between the catheter core and the sheath. The rotatable catheter core extends through the second adapter opening to allow the core to be coupled to a drive motor.

In accordance with one embodiment of the invention, the catheter core comprises an elongated center wire having a second wire wrapped in helical fashion about the center wire from a distal to a proximal portion of the core. This solid core embodiment includes a region at the catheter proximal end not having the outer helically wrapped wire. A smooth outer surface of the center wire can be pushed back and forth through a seal in the catheter's bifurcating adapter to move a distal tip portion of the core back and forth beneath the catheter sheath at the catheter's distal end. This first embodiment can be of a small diameter and therefore is suitable for use in small vessels such as the coronary artery or other small diameter vessels that have become blocked.

In accordance with the second embodiment of the invention, the core comprises a tightly wound center wire that defines a hollow throughpassage leading from the distal portion of the catheter to the proximal adapter coupling. A second wire is helically wound about the tightly wound center wire to define a pumping surface. At the proximal end, the center wire mates with a short piece of tubing which can be pushed back and forth through a seal in the bifurcating adapter to allow the distal tip portion to be maneuvered within the sheath.

This second embodiment of the invention is well suited for use with larger diameter blood vessels such as peripherals. The tightly wound center wire of this embodiment of the drive catheter is more flexible than a similarly dimensioned solid wire. The center wire is wound in the same sense as the helically wound second wire so that it produces a pumping which adds to the pumping produced as the helically wound second wire rotates.

The hollow portion of the second embodiment of the invention extends completely through the core section of the catheter to allow contrast medium or anti-coagulant to be injected from the proximal input through the hollow center section and out the distal tip portion during physical manipulation of the catheter. In addition, the hollow center section of this embodiment allows the catheter to be positioned using a conventional guidewire known in the prior art. In this embodiment, the guidewire is used to position the distal tip portion of the catheter and is then removed prior to motor energization of the catheter core. Both the guidewire and catheter are flexible enough to be routed through the blood vessels leading to the blocked blood vessel. Depending on the location of the obstruction, this can result in a total catheter core length (including the motor coupling) of from 100 to 200 cm.

From the above it is appreciated that one object of the invention is a drive catheter for opening a blocked portion of a blood vessel having a center core member defining a helical pump for withdrawing dislodged material from inside the patient. This and other objects, advantages and features of the invention will become better understood from the detailed description of a preferred embodiment of the invention which is described in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic depiction of a blood vessel and a distal portion of an elongated drive catheter positioned within the blood vessel for opening a blocked portion of the blood vessel;

FIG. 1A is an enlarged perspective view of the distal tip portion of the elongated drive catheter of FIG. 1;

FIG. 2 is an enlarged side elevation view showing one embodiment of the catheter depicted in FIG. 1;

FIG. 3 is a partially sectioned view as seen from the plane defined by the line 3--3 in FIG. 2;

FIG. 4 is an enlarged partially sectioned view of a proximal end of the FIG. 1 catheter;

FIG. 5 is an enlarged side elevation view showing an alternate embodiment of a catheter constructed in accordance with the invention;

FIG. 6 is a partially sectioned view of a distal end of elongated catheter of FIG. 5 as seen from the plane defined by the line 6--6 in FIG. 5; and

FIG. 7 is an enlarged partially sectioned view of a proximal end of the FIG. 5 catheter.

BEST MODE FOR CARRYING OUT THE INVENTION

Turning now to the drawings, FIG. 1 depicts a blood vessel 10 having an obstructed region 12 where plaque deposits have built up along an extend region of an inner wall surface of the blood vessel 10. In the situation depicted in FIG. 1, the obstruction 12 has impeded the flow of blood through the vessel 10 to the point where a physician has determined via an angiographic study that invasive procedures utilizing a drive catheter 14 can be effectively utilized to remove at least a portion of the deposits 12 from within the inner wall of the blood vessel 10.

In the FIG. 1 depiction, a distal end portion of the catheter 14 has been routed to the vicinity of the obstructions 12 prior to motor energization of the catheter 14 to effect a rotation of a distal tip 16. Procedures for maneuvering elongated catheters for both balloon angioplasty as well as diagnostic angiography are well known in the prior art. In accordance with one procedure, a catheter guidewire is inserted into the patient and the passage of this guidewire monitored through the patient on an x-ray imaging screen. When the guidewire has been properly positioned within the patient, prior art catheter systems are slipped over the guidewire and inserted along the guidewire path into the blood vessel of interest. During the insertion of the catheter, it is also well known to inject contrast medium which shows up on the x-ray viewing screen to aid the physician in properly positioning the catheter.

FIG. 2 depicts a first embodiment of the catheter 14. In accordance with the construction of this embodiment, the distal tip 16 is connected to a proximally located drive coupling 20 by an elongated flexible catheter core 22 rotatably supported by a generally cylindrical flexible outer sheath 18.

The core 22 comprises a first tightly wound inner wire 24 and a second outer wire 26 helically wound about and attached by soldering or the like to the first wire 24. In combination, the wires 24, 26 define a through-passage 28 extending through the catheter 14 to a proximal end of the catheter. The second wire 26 terminates near the proximal end of the catheter and the inner wire 24 is connected by welding or the like to a hollow metal tube 30 (FIG. 4).

The outer sheath or catheter 18 comprises either a single or multiple layers of extruded plastic either with or without a braided core for stiffening. In a preferred embodiment of the catheter 14, the outer sheath 18 comprises a thin walled catheter having longitudinal stability and constructed of Teflon or the like.

As seen most clearly in FIGS. 2 and 4, at the proximal end of the catheter 14, the outer sheath 18 is connected by heat welding or the like to a plastic bifurcating adapter 40. The adapter 40 defines an inline branch 42 and a side branch 44. The inline branch 42 is defined in part by a separate plastic coupling 46 having a throughpassage 48 to accommodate the catheter 14. A stop 50 attached to the drive coupling 20 comprises a cylindrical sleeve physically attached to the coupling 20 by welding or the like and defines an outer diameter greater than the diameter of the opening 48. In the FIG. 4 embodiment the drive coupling 20 is the proximal end of the hollow tube 30. The stop 50 defines a limit of movement through the sheath 18 of the core 22. In particular, this defines a limit for outer movement of the distal tip 16 attached (by welding) to the inner core wire 24 (FIG. 3).

Once the catheter distal tip 16 has been positioned in close proximity to the obstructions 12, a motor having an output shaft 60 is connected to the drive coupling 20 by means of an adapter assembly 62 which includes a threaded connector 62a that engages the motor output shaft 60. Rotational speeds in the range of 5,000 rpm are achieved utilizing a small hand-held direct current motor that is battery powered and specifically adapted for high speed energization of a catheter 14. The high speed rotation of the coupling 20 applies a torque to the core 22 to rotate the distal tip 16 at high speed. The distal tip 16 is then typically brought into contact with the deposits 12 and abrades those deposits to cause them to break loose from the blood vessel.

Both the inner and outer wires 24, 26 rotate in a spiralling manner. Since both wires 24, 26 are wound in the same sense they both produce a pumping action. This pumping action tends to draw dislodged particles of plaque which are separated from an inner wall of the blood vessel 10 into the catheter 14. The core wire 26 acts as a screw pump, not only creating a vortex of fluid within the blood vessel, but also physically carrying deposits along the length of the catheter within the sheath 18 to the vicinity of the side branch 44 of the bifurcated adapter 40. In addition to carrying dislodged particles away from the tip 16, the sheath 18 prevents uncontrolled abrasion of the blood vessel inner wall since the tip 16 cannot extend more than one-half its diameter beyond the distal end of the sheath 18.

As seen more clearly in FIG. 1A, the distal tip 16 has flutes 16a and grooves 16b extending along an outer surface. The flutes 16a spiral in a direction in the same sense as the spiralling helical wire 26 so that deposits an plaque dislodged from the blood vessel wall as the tip 16 contacts the deposits are routed through the grooves 16b to the spiralling core wire 26 and along the region between the more tightly wound inner core wire 24 and the sheath 18.

Experience with the catheter 14 constructed in accordance with the invention indicates that it is desirable to move the distal tip 16 within the sheath 18 and in particular to retract the distal tip 16 from the fully extended position shown in FIG. 3. As noted above, the stop 50 at the proximal end of the catheter 14 prevents movement of the distal tip 16 beyond the position shown in FIG. 3. During the procedure, however, it may be desirable to retract the distal tip 16 a short distance within the catheter sheath 18. To provide this capability, the hollow tubing 28 defines a smooth outer surface which slides back and forth through a plastic seal 70 fixed to the adapter coupling 46. The seal 70 acts as a bearing for the core 22 and allows the tube 28 to slide back and forth a limited distance within the adapter while preventing material pumped along the catheter sheath by the rotating core 22 from exiting the opening 48. Instead, this material, both removed plaque as well as blood that is pumped through the catheter 14, is directed to the side branch 44.

It is also anticipated that the physician may wish to withdraw the core 22 from the sheath 18 without removing the sheath from the patient. With the motor de-energized the core 22 and attached tip can be withdrawn through the seal 70, cleaned and re-inserted into the sheath 18. Also, a different core 22 having a differently configured tip 16 can be used to replace the original.

Coupled to the side branch 44 is a flexible plastic tube 72 having a conventional luer fitting 74 for the attachment of suction applying devices to withdraw the combined plaque and fluids driven along the catheter 14 to the interior of the proximal bifurcating adapter 40. The side branch 44 can also be used to inject a flushing fluid or heparin to control blood clotting. In addition blood pressure monitoring can be performed through this side branch 44.

As seen in FIGS. 2-4, a throughpassage concentric with the core 20 extends completely through the catheter 14. The throughpassage is first defined by a center passageway 76 in the distal tip 16 extends into the center passageway 28 defined by the spiralling inner wire 24 of the core 22 and then through the hollow tube 30. This center passageway accommodates either a guidewire for positioning the catheter 14 or can be utilized for delivering contrast medium out the distal tip 16. When used with a guidewire, the guidewire is positioned within the patient and then a proximal end of the guidewire is slipped over the tip 16 into the catheter 14 and used to guide the catheter to the vicinity of the obstructions 12.

Turning now to FIGS. 5-7, an alternate catheter 114 having a center core 122 and distal tip 116 is depicted. The catheter 114 also includes a motor coupling 120 and mechanical stop 150 for defining the limits of movement for the core 122 within an outer sheath 118. As seen most clearly in FIG. 6, in accordance with this embodiment of the invention, the core 122 includes a solid center flexible wire 124 having a helically spiralling stainless steel wire 126 wrapped about its outer surface. The embodiment of the catheter 114 shown in FIGS. 5-7 therefore does not define a center throughpassageway. Instead, the center wire 124 extends completely through the catheter 114 from the motor coupling 120 to the distal tip 116.

As seen most clearly in FIG. 7, in the vicinity of a bifurcating adapter 140 the outer helically wound wire 126 ends and the center core wire 124 passes through a seal 170 fixed within an inline coupling 146 of the adapter 140. This allows a limited amount of movement back and forth within the catheter sheath 118 of the rotating distal tip 116 and as in the first embodiment of the invention allows the core 122 and tip 116 to be withdrawn from the sheath 118 and then reinserted or replaced.

As in the earlier embodiment of the catheter disclosed in FIGS. 2-4, this alternate embodiment of the catheter 114 is routed to the vicinity of obstructions within a blood vessel. When the distal end of the catheter 114 has been properly positioned within the patient, the motor coupling 120 is energized by a motor having an output shaft 160 fixed to the coupling 120 by an adapter 162. When rotating with the core 122 of speeds up to 5000 rpm the outer helical wire 126 acts as a screw pump to create a vortex at the distal tip of the catheter 114. Dislodged particles of plaque are attracted into the sheath 118 and delivered by the screw pump 126 to the bifurcating adapter 140. As in the earlier embodiment, the side arm 144 opens into a plastic tube 172 having a luer fitting 174 for withdrawing material delivered along the length of the catheter 144 from the obstructed region of the blood vessel.

In both embodiments of the invention, the outer coiled wire is physically bonded at the ends of the core. This is preferably accomplished by welding the outer coiled wire to the core.

The first embodiment of the invention shown in FIGS. 2-4 has dimensions somewhat larger than the second embodiment shown in FIGS. 5-7. In one embodiment, the outside diameter of the helically wound coil 26 is 0.063 inches. The base coil 24 in this embodiment has an outside diameter of 0.038 inches. In the version depicted in FIGS. 5-7, an illustrative embodiment has a solid stainless steel wire for the center member 124 having an outside diameter of 0.014 inches. The outer coiled pump wire 126 is also a stainless steel wire and has an outer diameter of 0.039 inches. In the second embodiment stainless steel wire is used for both helically wrapped outer wire as well as in the inner closely wrapped wire. A preferred outer sheath 18 in the embodiments depicted in FIGS. 2-4 has an outside diameter of 0.087 inches and an inner diameter of 0.073 inches. This leaves a clearance of approximately 3 or 4 thousandths of an inch between the outer coil 26 and an inner wall of the sheath 18. The catheter length depends on how far the catheter must be routed through the cardiovascular system so that lengths up to 200 cm are used.

The present invention has been described with a degree of particularity. The dimensions presented are illustrative and are not intended to limit the scope of the invention. It is the intent, therefore, that the invention include all modifications or alterations falling within the spirit or scope of the appended claims.

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US3614953 *21 janv. 196926 oct. 1971Nat Res DevDrills for clearing obstructions in arteries
US3732858 *14 févr. 196915 mai 1973Surgical Design CorpApparatus for removing blood clots, cataracts and other objects from the eye
US3937222 *9 nov. 197310 févr. 1976Surgical Design CorporationSurgical instrument employing cutter means
US4061146 *15 avr. 19766 déc. 1977The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationTissue macerating instrument
US4167944 *27 juin 197718 sept. 1979Surgical Design Corp.Rotatable surgical cutting instrument with improved cutter blade wear
US4273128 *14 janv. 198016 juin 1981Lary Banning GCoronary cutting and dilating instrument
US4445509 *4 févr. 19821 mai 1984Auth David CMethod and apparatus for removal of enclosed abnormal deposits
US4512344 *12 mai 198223 avr. 1985Barber Forest CArthroscopic surgery dissecting apparatus
US4589412 *3 janv. 198420 mai 1986Intravascular Surgical Instruments, Inc.Method and apparatus for surgically removing remote deposits
US4631052 *17 déc. 198423 déc. 1986Intravascular Surgical Instruments, Inc.Method and apparatus for surgically removing remote deposits
US4632110 *30 août 198530 déc. 1986Olympus Optical Co., Ltd.Medical operation instrument for endoscope
US4649919 *23 janv. 198517 mars 1987Precision Surgical Instruments, Inc.Surgical instrument
US4653496 *1 févr. 198531 mars 1987Bundy Mark AFor the removal of stenotic/occlusive lesions from vascular lumens
US4679557 *10 sept. 198414 juil. 1987E. R. Squibb & Sons, Inc.Electrodynamic transluminal angioplasty system
US4728319 *21 mai 19861 mars 1988Helmut MaschIntravascular catheter
US4732154 *16 juin 198622 mars 1988Surgical Systems & Instruments, Inc.Rotary catheter system
SU778067A1 * Titre non disponible
Citations hors brevets
Référence
1 *Pedalty, Augioplasty Catheters: Opening New Paths, Medtronic Pulse, vol. 5, No. 2, 1987 p. 8, pp. 11 12.
2Pedalty, Augioplasty Catheters: Opening New Paths, Medtronic Pulse, vol. 5, No. 2, 1987-p. 8, pp. 11-12.
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US5047040 *16 févr. 198910 sept. 1991Devices For Vascular Intervention, Inc.Atherectomy device and method
US5059203 *17 mai 198922 oct. 1991Husted Royce HillPowered microsurgical tool
US5078722 *14 août 19907 janv. 1992Cordis CorporationMethod and apparatus for removing deposits from a vessel
US5087265 *24 juil. 198911 févr. 1992American Biomed, Inc.Distal atherectomy catheter
US5100424 *21 mai 199031 mars 1992Cardiovascular Imaging Systems, Inc.Intravascular catheter having combined imaging abrasion head
US5108411 *28 mars 199028 avr. 1992Cardiovascular Imaging Systems, Inc.Flexible catheter drive cable
US5135531 *27 mars 19904 août 1992Surgical Systems & Instruments, Inc.Guided atherectomy system
US5170805 *11 déc. 199015 déc. 1992Kensey Nash CorporationMethod of destroying tissue such as a gall bladder utilizing a sclerosing agent alone or with a symphysis agent
US5195954 *26 juin 199023 mars 1993Schnepp Pesch WolframApparatus for the removal of deposits in vessels and organs of animals
US5195956 *19 sept. 199023 mars 1993Uwe StockmeierMedical catheter with a cutting device
US5242460 *25 oct. 19907 sept. 1993Devices For Vascular Intervention, Inc.Atherectomy catheter having axially-disposed cutting edge
US5261877 *22 juil. 199116 nov. 1993Dow Corning WrightMethod of performing a thrombectomy procedure
US5267955 *16 juil. 19927 déc. 1993Lake Region Manufacturing Company, Inc.Atherectomy device
US5269751 *22 juil. 199214 déc. 1993Josef KalimanThrombectomy catheter for enlarging an artery
US5284473 *16 juil. 19918 févr. 1994C. R. Bard, Inc.Perfusion catheter with flow amplifier
US5366443 *9 oct. 199222 nov. 1994Thapliyal And Eggers PartnersMethod and apparatus for advancing catheters through occluded body lumens
US5370651 *10 févr. 19926 déc. 1994Summers; David P.Distal atherectomy catheter
US5395312 *10 mai 19937 mars 1995Desai; AshvinSurgical tool
US5402790 *27 févr. 19924 avr. 1995Cardiovascular Imaging Systems, Inc.Intravascular catheter having combined imaging abrasion head
US5417703 *13 juil. 199323 mai 1995Scimed Life Systems, Inc.Thrombectomy devices and methods of using same
US5419774 *13 juil. 199330 mai 1995Scimed Life Systems, Inc.Thrombus extraction device
US5507292 *22 août 199416 avr. 1996Cardiovascular Imaging Systems, Inc.Method for removing the stenotic material from a patient's vascular system
US5512044 *11 oct. 199430 avr. 1996Duer; Edward Y.For use in the removal or arterial plaque
US5551443 *21 janv. 19953 sept. 1996Conceptus, Inc.Guidewire-type device axially moveable by torque or axial force and methods for use thereof
US5569276 *6 juin 199529 oct. 1996Cardiovascular Imaging Systems, Inc.Intravascular catheter having combined imaging abrasion head
US5662671 *17 juil. 19962 sept. 1997Embol-X, Inc.Atherectomy device having trapping and excising means for removal of plaque from the aorta and other arteries
US5728129 *7 juin 199517 mars 1998American Biomed, Inc.Distal atherectomy catheter
US5873882 *7 mars 199623 févr. 1999Straub Medical AgCatheter for detaching abnormal deposits from blood vessels in humans
US5876414 *7 mars 19962 mars 1999Straub Medical AgCatheter for detaching abnormal deposits from blood vessels in humans
US5882329 *12 févr. 199716 mars 1999Prolifix Medical, Inc.Apparatus and method for removing stenotic material from stents
US5895397 *30 août 199620 avr. 1999Cardiovascular Imaging Systems, Inc.Intravascular catheter having combined imaging abrasion head
US5902263 *24 déc. 199711 mai 1999Prolifix Medical, Inc.Apparatus and method for removing stenotic material from stents
US5941869 *16 mai 199724 août 1999Prolifix Medical, Inc.Apparatus and method for controlled removal of stenotic material from stents
US5993469 *27 mai 199730 nov. 1999Embol-X, Inc.Guiding catheter for positioning a medical device within an artery
US6001112 *10 avr. 199814 déc. 1999Endicor Medical, Inc.Rotational atherectomy device
US6010522 *24 juil. 19964 janv. 2000Embol-X, Inc.Atherectomy device having trapping and excising means for removal of plaque from the aorta and other arteries
US6024749 *16 mars 199815 févr. 2000Shturman Cardiology Systems, Inc.Rotational atherectomy device with improved exchangeable drive shaft cartridge
US6077282 *10 déc. 199720 juin 2000Shturman Cardiology Systems, Inc.Rotational atherectomy device with exchangeable drive shaft cartridge
US6129734 *27 oct. 199710 oct. 2000Shturman Cardiology Systems, Inc.Rotational atherectomy device with radially expandable prime mover coupling
US62068981 mars 199927 mars 2001Endicor Medical, Inc.Rotational atherectomy device
US6248091 *3 juin 199719 juin 2001Wolfram VoelkerBalloon catheter
US63192422 mars 199920 nov. 2001Prolifix Medical, Inc.Apparatus and method for controlled removal of stenotic material from stents
US63719693 déc. 199916 avr. 2002Scimed Life Systems, Inc.Distal protection device and method
US637197023 déc. 199916 avr. 2002Incept LlcVascular filter having articulation region and methods of use in the ascending aorta
US637197128 avr. 200016 avr. 2002Scimed Life Systems, Inc.Guidewire filter and methods of use
US6423052 *18 août 200023 juil. 2002Endovascular Technologies, Inc.Torque absorbing catheter
US6443966 *16 oct. 19973 sept. 2002Intravascular Medical, Inc.Surgical instrument
US645103612 juin 200017 sept. 2002Endicor Medical, Inc.Rotational atherectomy system with stationary cutting elements
US64547794 oct. 199924 sept. 2002Endicor Medical, Inc.Rotational atherectomy device
US64822177 sept. 200019 nov. 2002Endicor Medical, Inc.Neuro thrombectomy catheter
US653093930 juil. 199911 mars 2003Incept, LlcVascular device having articulation region and methods of use
US65372956 mars 200125 mars 2003Scimed Life Systems, Inc.Wire and lock mechanism
US65442799 août 20008 avr. 2003Incept, LlcVascular device for emboli, thrombus and foreign body removal and methods of use
US654428027 nov. 20008 avr. 2003Scimed Life Systems, Inc.Intravascular filter and method
US657929829 févr. 200017 juin 2003Scimed Life Systems, Inc.Method and apparatus for treating vein graft lesions
US658926329 oct. 19998 juil. 2003Incept LlcVascular device having one or more articulation regions and methods of use
US659233510 mai 200215 juil. 2003Jonathan B. RosefskyRibbon drive pumping apparatus and method
US66166797 juil. 20009 sept. 2003Incept, LlcRapid exchange vascular device for emboli and thrombus removal and methods of use
US66166817 mars 20019 sept. 2003Scimed Life Systems, Inc.Filter delivery and retrieval device
US662014829 sept. 200016 sept. 2003Scimed Life Systems, Inc.Filter flush system and methods of use
US66201829 août 200016 sept. 2003Incept LlcVascular filter having articulation region and methods of use in the ascending aorta
US665250529 sept. 200025 nov. 2003Scimed Life Systems Inc.Guided filter with support wire and methods of use
US666365116 janv. 200116 déc. 2003Incept LlcSystems and methods for vascular filter retrieval
US666687417 sept. 199923 déc. 2003Endicor Medical, Inc.Rotational atherectomy system with serrated cutting tip
US667309022 janv. 20016 janv. 2004Scimed Life Systems, Inc.Percutaneous catheter and guidewire for filtering during ablation of myocardial or vascular tissue
US66766825 oct. 200013 janv. 2004Scimed Life Systems, Inc.Percutaneous catheter and guidewire having filter and medical device deployment capabilities
US668254324 oct. 200127 janv. 2004C Edwards Lifesciences CorporationMethods for aortic artherectomy
US668915125 janv. 200110 févr. 2004Scimed Life Systems, Inc.Variable wall thickness for delivery sheath housing
US6702830 *9 juin 20009 mars 2004Bacchus Vascular, Inc.Mechanical pump for removal of fragmented matter and methods of manufacture and use
US67558475 oct. 200129 juin 2004Scimed Life Systems, Inc.Emboli capturing device and method of manufacture therefor
US675885129 mai 20016 juil. 2004Samuel ShiberVessel cleaner
US681800223 sept. 200216 nov. 2004Samuel ShiberVessel cleaner and barrier
US695157028 juin 20024 oct. 2005Rubicon Medical, Inc.Methods, systems, and devices for deploying a filter from a filter device
US696259828 juin 20028 nov. 2005Rubicon Medical, Inc.Methods, systems, and devices for providing embolic protection
US696467326 mars 200315 nov. 2005Scimed Life Systems, Inc.Percutaneous catheter and guidewire having filter and medical device deployment capabilities
US699164228 janv. 200331 janv. 2006Scimed Life Systems, Inc.Wire and lock mechanism
US699793928 juin 200214 févr. 2006Rubicon Medical, Inc.Methods, systems, and devices for deploying an embolic protection filter
US701817023 mai 200328 mars 2006Rosefsky Jonathan BRibbon drive pumping apparatus and method with added fluid
US705250019 oct. 200130 mai 2006Scimed Life Systems, Inc.Embolus extractor
US709424927 nov. 200022 août 2006Boston Scientific Scimed, Inc.Distal protection device and method
US709765231 déc. 200329 août 2006Scimed Life Systems, Inc.Variable wall thickness for delivery sheath housing
US710496616 juil. 200312 sept. 2006Samuel ShiberGuidewire system with exposed midsection
US717261017 oct. 20036 févr. 2007Ev3 Endovascular, Inc.Rotational atherectomy system with stationary cutting elements
US720446421 janv. 200517 avr. 2007Boston Scientific Scimed, Inc.Medical wire holder
US722946417 juil. 200312 juin 2007Scimed Life Systems, Inc.Filter delivery and retrieval device
US723506119 sept. 200326 juin 2007Boston Scientific Scimed, Inc.Guided filter with support wire and methods of use
US723508819 juil. 200226 juin 2007Ev3 Endovascular, Inc.Neuro thrombectomy catheter
US731669725 avr. 20038 janv. 2008Samuel ShiberVessel cleaning system with asymmetrical auto retracting agitator
US73206978 déc. 200322 janv. 2008Boston Scientific Scimed, Inc.One piece loop and coil
US732069810 mai 200422 janv. 2008Boston Scientific Scimed, Inc.Emboli capturing device and method of manufacture therefor
US73262263 nov. 20035 févr. 2008Boston Scientific Scimed, Inc.Percutaneous catheter and guidewire for filtering during ablation of myocardial or vascular tissue
US741049122 nov. 200212 août 2008Incept LlcVascular device for emboli, thrombus and foreign body removal and methods of use
US741655521 mars 200526 août 2008Medtronic Vascular, Inc.Intravascular material removal device
US74225856 juil. 19999 sept. 2008Arthrocare CorporationSystem for electrosurgical myocardial revascularization
US747326515 mars 20046 janv. 2009Boston Scientific Scimed, Inc.Filter media and methods of manufacture
US747846510 janv. 200520 janv. 2009Boston Scientific Scimed, Inc.Method of securing a restraining member on a medical device
US747914714 déc. 200020 janv. 2009Ev3 Endovascular, Inc.Rotational atherectomy device
US750581216 juil. 199917 mars 2009Arthrocare CorporationElectrosurgical system for treating restenosis of body lumens
US756327218 janv. 200521 juil. 2009Boston Scientific Scimed, Inc.Emboli filtration system and methods of use
US759179030 juil. 200722 sept. 2009Stryker Puerto Rico LimitedMicro-invasive device
US75949267 nov. 200229 sept. 2009Boston Scientific Scimed, Inc.Methods, systems and devices for delivering stents
US761843318 mars 200317 nov. 2009Boston Scientific Scimed, Inc.Intravascular filter and method
US762190421 oct. 200424 nov. 2009Boston Scientific Scimed, Inc.Catheter with a pre-shaped distal tip
US765151411 déc. 200326 janv. 2010Boston Scientific Scimed, Inc.Nose rider improvement for filter exchange and methods of use
US76550169 mars 20042 févr. 2010CovidienMechanical pump for removal of fragmented matter and methods of manufacture and use
US766616121 mai 200723 févr. 2010The Spectranetics CorporationThrombectomy and soft debris removal device
US769112318 août 20056 avr. 2010Boston Scientific Scimed, Inc.Percutaneous catheter and guidewire having filter and medical device deployment capabilities
US76954657 nov. 200313 avr. 2010Boston Scientific Scimed, Inc.Chronic total occlusion device with variable stiffness shaft
US769986615 avr. 200520 avr. 2010Boston Scientific Scimed, Inc.Emboli filtration system and methods of use
US770877018 juin 20034 mai 2010Boston Scientific Scimed, Inc.Stent delivery device with embolic protection
US777144520 juin 200210 août 2010Ev3 Endovascular, Inc.Rotational atherectomy system with stationary cutting elements
US77806111 mai 200324 août 2010Boston Scientific Scimed, Inc.Medical instrument with controlled torque transmission
US779447211 août 200414 sept. 2010Boston Scientific Scimed, Inc.Single wire intravascular filter
US784205521 juil. 200630 nov. 2010Ev3 Endovascular, Inc.Neuro thrombectomy catheter
US787505022 févr. 200225 janv. 2011Target Therapeutics, Inc.Mechanical clot treatment device
US789686113 oct. 20091 mars 2011Boston Scientific Scimed, Inc.Catheter with a pre-shaped distal tip
US7905896 *3 mars 200515 mars 2011Straub Medical AgCatheter for aspirating, fragmenting and removing material
US795960827 avr. 200414 juin 2011The Spectranetics CorporationThrombectomy and soft debris removal device
US797652812 févr. 201012 juil. 2011The Spectranetics, Corp.Thrombectomy and soft debris removal device
US798112819 oct. 200619 juil. 2011Atheromed, Inc.Atherectomy devices and methods
US79981632 oct. 200316 août 2011Boston Scientific Scimed, Inc.Expandable retrieval device
US800750619 oct. 200630 août 2011Atheromed, Inc.Atherectomy devices and methods
US80386966 déc. 200418 oct. 2011Boston Scientific Scimed, Inc.Sheath for use with an embolic protection filter
US804328713 mai 200525 oct. 2011Kimberly-Clark Inc.Method of treating biological tissue
US806225815 déc. 200922 nov. 2011Tyco Healthcare Group LpMechanical pump for removal of fragmented matter and methods of manufacture and use
US807076222 oct. 20086 déc. 2011Atheromed Inc.Atherectomy devices and methods
US80969577 mars 200617 janv. 2012Kimberly-Clark Inc.Method for removing material from a patient's body
US811410618 févr. 201114 févr. 2012Straub Medical AgCatheter for aspirating, fragmenting and removing material
US81236709 août 200728 févr. 2012Leo Antonovich BokeriyaMethod for forming a blood flow in surgically reconstituted segments of the blood circulatory system and devices for carrying out said method
US812377730 sept. 200528 févr. 2012Incept, LlcApparatus and methods for aspirating emboli
US819245214 mai 20105 juin 2012Tyco Healthcare Group LpEasily cleaned atherectomy catheters and methods of use
US82015637 mars 200619 juin 2012Kimberly-Clark, Inc.Method for introducing materials into a body
US82266749 avr. 201024 juil. 2012Tyco Healthcare Group LpDebulking catheters and methods
US823601610 avr. 20097 août 2012Atheromed, Inc.Atherectomy devices and methods
US823602428 oct. 20047 août 2012Boston Scientific Scimed, Inc.Low profile emboli capture device
US824131524 juin 200414 août 2012Boston Scientific Scimed, Inc.Apparatus and method for treating occluded vasculature
US824664018 mai 200621 août 2012Tyco Healthcare Group LpMethods and devices for cutting tissue at a vascular location
US826269012 nov. 200411 sept. 2012Boston Scientific Scimed, Inc.Wire and lock mechanism
US827747021 oct. 20112 oct. 2012Tyco Healthcare Group LpMechanical pump for removal of fragmented matter and methods of manufacture and use
US829282913 juil. 201023 oct. 2012Boston Scientific Scimed, Inc.Medical instrument with controlled torque transmission
US830361828 déc. 20046 nov. 2012Boston Scientific Scimed, Inc.Intravascular filter and method
US83288292 nov. 200711 déc. 2012Covidien LpHigh capacity debulking catheter with razor edge cutting window
US83375162 déc. 201125 déc. 2012Atheromed, Inc.Atherectomy devices and methods
US834317926 sept. 20111 janv. 2013Spine View, Inc.Systems and methods for cable-based tissue removal
US83610946 déc. 200629 janv. 2013Atheromed, Inc.Atherectomy devices and methods
US840391219 janv. 201126 mars 2013Boston Scientific Scimed, Inc.Catheter with a pre-shaped distal tip
US841460413 oct. 20099 avr. 2013Covidien LpDevices and methods for manipulating a catheter shaft
US844466517 juil. 200321 mai 2013Boston Scientific Scimed, Inc.Filter flush system and methods of use
US844466921 sept. 200921 mai 2013Boston Scientific Scimed, Inc.Embolic filter delivery system and method
US846033617 août 201111 juin 2013Incept LlcSystems and methods for vascular filter retrieval
US846867818 juil. 201125 juin 2013Boston Scientific Scimed, Inc.Expandable retrieval device
US846997922 sept. 201125 juin 2013Covidien LpHigh capacity debulking catheter with distal driven cutting wheel
US848062928 janv. 20059 juil. 2013Boston Scientific Scimed, Inc.Universal utility board for use with medical devices and methods of use
US848610413 déc. 201016 juil. 2013Stryker CorporationMechanical clot treatment device with distal filter
US84966772 déc. 201030 juil. 2013Covidien LpMethods and devices for cutting tissue
US850554519 juin 201213 août 2013Kimberly-Clark, Inc.Method of and device for introducing materials into a body
US851803613 nov. 200727 août 2013Kimberly-Clark Inc.Electrosurgical tissue treatment method
US85353449 sept. 200417 sept. 2013Rubicon Medical, Inc.Methods, systems, and devices for providing embolic protection and removing embolic material
US854544720 août 20121 oct. 2013Covidien LpMechanical pump for removal of fragmented matter and methods of manufacture and use
US85684325 nov. 200929 oct. 2013Straub Medical Ag.Catheter for aspirating, fragmenting and removing extractable material from blood vessels
US85742491 mai 20125 nov. 2013Covidien LpEasily cleaned atherectomy catheters and methods of use
US857992628 nov. 201112 nov. 2013Covidien LpPlaque removal device with rotatable cutting element
US85799574 mai 201012 nov. 2013Boston Scientific Scimed, Inc.Stent delivery device with embolic protection
US85973151 juil. 20103 déc. 2013Covidien LpAtherectomy catheter with first and second imaging devices
US861720124 mai 201231 déc. 2013Incept LlcVascular device for emboli, thrombus and foreign body removal and methods of use
US862854930 juin 200814 janv. 2014Atheromed, Inc.Atherectomy devices, systems, and methods
US864735530 nov. 201211 févr. 2014Atheromed, Inc.Atherectomy devices and methods
US870273926 sept. 201122 avr. 2014David BattenDevices and methods for arched roof cutters
US874089712 août 20133 juin 2014Kimberly-Clark, Inc.Electrosurgical tissue treatment method and device
US87844401 déc. 200822 juil. 2014Covidien LpMethods and devices for cutting tissue
US879530631 oct. 20135 août 2014Atheromed, Inc.Atherectomy apparatus, systems and methods
US880173915 avr. 201012 août 2014Spine View, Inc.Devices and methods for arched roof cutters
US880818610 nov. 201119 août 2014Covidien LpFlexible debulking catheters with imaging and methods of use and manufacture
US880832028 juin 201019 août 2014Spine View, Inc.Devices and methods for arched roof cutters
US20120289910 *25 juil. 201215 nov. 2012Motus Gi Medical Technologies Ltd.Systems and methods for cleaning body cavities
USRE4388217 juin 201125 déc. 2012Incept, LlcVascular device for emboli, thrombus and foreign body removal and methods of use
USRE4390217 juin 20111 janv. 2013Incept, LlcVascular device for emboli, thrombus and foreign body removal and methods of use
EP0421457A1 *5 oct. 199010 avr. 1991Angiomed AgDevice for removal of deposits in vessels
EP0623328A1 *27 avr. 19949 nov. 1994GRIESHABER & CO. AG SCHAFFHAUSENSurgical apparatus for pulverizing and removing the nucleus from the lens of an eye of a living creature
EP0739603A1 *20 mai 199130 oct. 1996Cardiovascular Imaging Systems, Inc.Intravascular catheter having combined imaging abrasion head
EP2014244A13 mars 200514 janv. 2009Straub Medical AGWorking head on a catheter for suction, fragmenting and removing material extractable from blood vessels.
EP2211732A1 *22 oct. 20084 août 2010Atheromed, Inc.Atherectomy devices and methods
EP2314329A127 avr. 200527 avr. 2011The Spectranetics CorporationThrombectomy and soft debris removal device
EP2574294A1 *22 août 20123 avr. 2013Covidien LPRotating occlusion treatment system
WO1991001114A1 *23 juil. 19907 févr. 1991American Biomed IncImproved distal atherectomy catheter
WO1991014394A1 *18 mars 19913 oct. 1991Cardiovascular Imaging SystemsFlexible catheter drive cable
WO1991017711A1 *20 mai 199128 nov. 1991Cardiovascular Imaging SystemsIntravascular catheter having combined imaging abrasion head
WO1992005742A1 *30 sept. 199129 mars 1992Georges ComteAncillary material for percutaneous dissectomy in the treatment of slipped discs
WO1996029941A1 *7 mars 19963 oct. 1996Helmuth MohrCatheter for detaching abnormal deposits in human blood vessels
WO1996029942A1 *7 mars 19963 oct. 1996Straub FedernfabrikCatheter for detaching abnormal deposits in human blood vessels
WO1998002202A110 juil. 199722 janv. 1998Csfluids IncMethod and apparatus for treating adult-onset dementia of the alzheimer's type
WO1999021492A1 *31 oct. 19976 mai 1999Shturman Cardiology Syst IncRotational atherectomy device with radially expandable prime mover coupling
WO1999056638A2 *5 mai 199911 nov. 1999Ensurg IncMedical device for dissolution of tissue within the human body
WO1999060934A1 *21 mai 19992 déc. 1999Ensurg IncMedical device for the transportation and dissolution of fluid and matter from within the human body
WO2001009515A129 juil. 20008 févr. 2001Jonathan B RosefskyRibbon drive pumping apparatus and method
WO2001064115A2 *30 janv. 20017 sept. 2001Boston Scient LtdMethod and apparatus for treating vein graft lesions
WO2009022940A1 *9 août 200719 févr. 2009Leo Antonovich BokeriyaMethod for forming a blood flow in surgically reconstituted segments of the blood circulatory system and devices for carrying our said method
WO2009097008A114 août 20086 août 2009Spectranetics CorpThrombectomy and soft debris removal device
WO2010093521A1 *27 janv. 201019 août 2010Penumbra, Inc.System for treating ischemic stroke
Classifications
Classification aux États-Unis604/22, 606/159
Classification internationaleA61B17/22, A61B17/00, A61B1/12
Classification coopérativeA61B1/12, A61B17/320758, A61B2017/22094, A61B2017/00685
Classification européenneA61B1/12, A61B17/3207R
Événements juridiques
DateCodeÉvénementDescription
16 oct. 2001FPExpired due to failure to pay maintenance fee
Effective date: 20010815
12 août 2001LAPSLapse for failure to pay maintenance fees
6 mars 2001REMIMaintenance fee reminder mailed
5 déc. 1996FPAYFee payment
Year of fee payment: 8
22 avr. 1996ASAssignment
Owner name: DOW CORNING ENTERPRISES, MICHIGAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THERATEK INTERNATIONAL INC.;REEL/FRAME:007908/0174
Effective date: 19960408
20 mars 1995ASAssignment
Owner name: THERATEK INTERNATIONAL, INC.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOW CORNING CORPORATION;REEL/FRAME:007403/0323
Effective date: 19941220
17 janv. 1995ASAssignment
Owner name: DOW CORNING CORPORATION
Free format text: MERGER;ASSIGNOR:DOW CORNING WRIGHT CORPORATION;REEL/FRAME:007403/0341
Effective date: 19940712
4 déc. 1992FPAYFee payment
Year of fee payment: 4
21 mars 1991ASAssignment
Owner name: CORDIS CORPORATION (CORDIS), A CORP. OF FL
Free format text: LICENSE;ASSIGNOR:DOW CORNING WRIGHT CORPORATION (DCW), A CORP. OF TN;REEL/FRAME:005648/0180
Effective date: 19900629
Owner name: DOW CORNING WRIGHT CORPORATION (DCW), A CORP. OF T
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CORDIS CORPORATION;REEL/FRAME:005648/0176
21 oct. 1987ASAssignment
Owner name: CORDIS CORPORATION, 10555 W. FLAGLER STREET, MIAMI
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:STEVENS, ROBERT C.;BRAUN, ROBERT R.;REEL/FRAME:004795/0019
Effective date: 19871019
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STEVENS, ROBERT C.;BRAUN, ROBERT R.;REEL/FRAME:004795/0019